8" Rockwool Block Cover, pack of 40
8" Rockwool Block Cover, pack of 40 at HorticultureSource.com -
Hydrofarm 8" Rockwool Block Cover (HGCOV8) • Blocks light from media - keeps moist longer • Reflects light up toward plant where it's needed most • Eliminates algae and mildeew growth • Dual sided white/black covers   Manufacturer's Product Information MSRP each $ 22.95 UPC 638104001304 Dimensions 6 x 0.63 x 10.5 Case Weight 5 Case Quantity 40